1/*
  2 * (C)opyright MMVI Anselm R. Garbe <garbeam at gmail dot com>
  3 * See LICENSE file for license details.
  4 */
  5#include "dwm.h"
  6#include <regex.h>
  7#include <stdio.h>
  8#include <stdlib.h>
  9#include <string.h>
 10#include <sys/types.h>
 11#include <X11/Xutil.h>
 12
 13
 14typedef struct {
 15	const char *clpattern;
 16	const char *tpattern;
 17	Bool isfloat;
 18} Rule;
 19
 20typedef struct {
 21	regex_t *clregex;
 22	regex_t *tregex;
 23} RReg;
 24
 25/* static */
 26
 27TAGS
 28RULES
 29
 30static RReg *rreg = NULL;
 31static unsigned int len = 0;
 32
 33void (*arrange)(Arg *) = DEFMODE;
 34
 35/* extern */
 36
 37void
 38appendtag(Arg *arg)
 39{
 40	if(!sel)
 41		return;
 42
 43	sel->tags[arg->i] = True;
 44	arrange(NULL);
 45}
 46
 47void
 48dofloat(Arg *arg)
 49{
 50	Client *c;
 51
 52	for(c = clients; c; c = c->next) {
 53		c->ismax = False;
 54		if(c->tags[tsel]) {
 55			resize(c, True, TopLeft);
 56		}
 57		else
 58			ban(c);
 59	}
 60	if((sel = getnext(clients))) {
 61		higher(sel);
 62		focus(sel);
 63	}
 64	else
 65		XSetInputFocus(dpy, root, RevertToPointerRoot, CurrentTime);
 66	drawall();
 67}
 68
 69void
 70dotile(Arg *arg)
 71{
 72	int n, i, w, h;
 73	Client *c;
 74
 75	w = sw - mw;
 76	for(n = 0, c = clients; c; c = c->next)
 77		if(c->tags[tsel] && !c->isfloat)
 78			n++;
 79
 80	if(n > 1)
 81		h = (sh - bh) / (n - 1);
 82	else
 83		h = sh - bh;
 84
 85	for(i = 0, c = clients; c; c = c->next) {
 86		c->ismax = False;
 87		if(c->tags[tsel]) {
 88			if(c->isfloat) {
 89				higher(c);
 90				resize(c, True, TopLeft);
 91				continue;
 92			}
 93			if(n == 1) {
 94				c->x = sx;
 95				c->y = sy + bh;
 96				c->w = sw - 2;
 97				c->h = sh - 2 - bh;
 98			}
 99			else if(i == 0) {
100				c->x = sx;
101				c->y = sy + bh;
102				c->w = mw - 2;
103				c->h = sh - 2 - bh;
104			}
105			else if(h > bh) {
106				c->x = sx + mw;
107				c->y = sy + (i - 1) * h + bh;
108				c->w = w - 2;
109				if(i + 1 == n)
110					c->h = sh - c->y - 2;
111				else
112					c->h = h - 2;
113			}
114			else { /* fallback if h < bh */
115				c->x = sx + mw;
116				c->y = sy + bh;
117				c->w = w - 2;
118				c->h = sh - 2 - bh;
119			}
120			resize(c, False, TopLeft);
121			i++;
122		}
123		else
124			ban(c);
125	}
126	if((sel = getnext(clients))) {
127		higher(sel);
128		focus(sel);
129	}
130	else
131		XSetInputFocus(dpy, root, RevertToPointerRoot, CurrentTime);
132	drawall();
133}
134
135Client *
136getnext(Client *c)
137{
138	for(; c && !c->tags[tsel]; c = c->next);
139	return c;
140}
141
142Client *
143getprev(Client *c)
144{
145	for(; c && !c->tags[tsel]; c = c->prev);
146	return c;
147}
148
149void
150initrregs()
151{
152	unsigned int i;
153	regex_t *reg;
154
155	if(rreg)
156		return;
157	len = sizeof(rule) / sizeof(rule[0]);
158	rreg = emallocz(len * sizeof(RReg));
159
160	for(i = 0; i < len; i++) {
161		if(rule[i].clpattern) {
162			reg = emallocz(sizeof(regex_t));
163			if(regcomp(reg, rule[i].clpattern, 0))
164				free(reg);
165			else
166				rreg[i].clregex = reg;
167		}
168		if(rule[i].tpattern) {
169			reg = emallocz(sizeof(regex_t));
170			if(regcomp(reg, rule[i].tpattern, 0))
171				free(reg);
172			else
173				rreg[i].tregex = reg;
174		}
175	}
176}
177
178void
179replacetag(Arg *arg)
180{
181	int i;
182
183	if(!sel)
184		return;
185
186	for(i = 0; i < ntags; i++)
187		sel->tags[i] = False;
188	appendtag(arg);
189}
190
191void
192settags(Client *c)
193{
194	char classinst[256];
195	unsigned int i, j;
196	regmatch_t tmp;
197	Bool matched = False;
198	XClassHint ch;
199
200	if(XGetClassHint(dpy, c->win, &ch)) {
201		snprintf(classinst, sizeof(classinst), "%s:%s",
202				ch.res_class ? ch.res_class : "",
203				ch.res_name ? ch.res_name : "");
204		for(i = 0; !matched && i < len; i++)
205			if(rreg[i].clregex && !regexec(rreg[i].clregex, classinst, 1, &tmp, 0)) {
206				c->isfloat = rule[i].isfloat;
207				for(j = 0; rreg[i].tregex && j < ntags; j++) {
208					if(!regexec(rreg[i].tregex, tags[j], 1, &tmp, 0)) {
209						matched = True;
210						c->tags[j] = True;
211					}
212				}
213			}
214		if(ch.res_class)
215			XFree(ch.res_class);
216		if(ch.res_name)
217			XFree(ch.res_name);
218	}
219	if(!matched)
220		c->tags[tsel] = True;
221}
222
223void
224togglemode(Arg *arg)
225{
226	arrange = arrange == dofloat ? dotile : dofloat;
227	arrange(NULL);
228}
229
230void
231view(Arg *arg)
232{
233	tsel = arg->i;
234	arrange(NULL);
235	drawall();
236}
237
238void
239viewnext(Arg *arg)
240{
241	arg->i = (tsel < ntags-1) ? tsel+1 : 0;
242	view(arg);
243}
244
245void
246viewprev(Arg *arg)
247{
248	arg->i = (tsel > 0) ? tsel-1 : ntags-1;
249	view(arg);
250}